US9773980B2ActiveUtilityA1

Organic electroluminescent device

Assignee: TOSHIBA KKPriority: Apr 5, 2013Filed: Mar 5, 2014Granted: Sep 26, 2017

Est. expiryApr 5, 2033(~6.7 yrs left)· nominal 20-yr term from priority

Inventors:Yukitami Mizuno Yasushi Shinjo Akio Amano Tomoko Sugizaki

C09K 11/06H01L 51/5012H01L 51/5016C09K 2211/1458H01L 51/0036H05B 33/20H10K 2101/10H10K 85/113H10K 50/11

57

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Cited by

12

References

17

Claims

Abstract

According to one embodiment, the organic electroluminescent device includes an anode, a cathode provided apart from the anode, and a luminous layer. The luminous layer is disposed between the anode and the cathode and contains a host material and a luminous dopant. The host material includes a polymer having a skeleton represented by Formula 1 below in a repeating unit, and a number of repetitions being 20 to 10,000. (X is an element composing a polymer backbone, R1, R2, R3, and R4 may be identical or different, and each of them is selected from a hydrogen atom, an alkyl group, an aromatic ring group, an alkoxy group, an alkothio group, and a halogen atom.)

Claims

exact text as granted — not AI-modified

What is claimed is:

1. An organic electroluminescent device comprising:
an anode;
a cathode provided apart from the anode; and
a luminous layer disposed between the anode and the cathode and comprising a host material and a luminous dopant, the host material comprising at least one polymer selected from the group consisting of

wherein n is from 20 to 10,000.

2. The organic electroluminescent device according to claim 1 , wherein n is 100 to 5,000.

3. An illumination apparatus comprising:
the organic electroluminescent device according to claim 1 ; and
a driving unit driving the organic electroluminescent device.

4. A display comprising:
the organic electroluminescent device according to claim 1 ; and
a driving unit driving the organic electroluminescent device.

5. The organic electroluminescent device according to claim 1 , wherein the host material comprises:

wherein n is from 20 to 10,000.

6. The organic electroluminescent device according to claim 1 , wherein the host material comprises:

wherein n is from 20 to 10,000.

7. The organic electroluminescent device according to claim 1 . wherein the host material comprises:

wherein n is from 20 to 10,000.

8. The organic electroluminescent device according to claim 1 , wherein the host material comprises:

wherein n is from 20 to 10,000.

9. The organic electroluminescent device according to claim 1 , wherein the host material comprises:

wherein n is from 20 to 10,000.

10. A host material comprising at least one polymer selected from the group consisting of

wherein n is from 20 to 10,000.

11. The host material according to claim 10 , wherein n is 100 to 5,000.

12. The host material according to claim 10 , wherein a number-average molecular weight of the polymer is 20,000 to 1,000,000.

13. The host material according to claim 10 , which comprises:

wherein n is from 20 to 10,000.

14. The host material according to claim 10 , which comprises:

wherein n is from 20 to 10,000.

15. The host material according to claim 10 , which comprises:

wherein n is from 20 to 10,000.

16. The host material according to claim 10 , which comprises:

wherein n is from 20 to 10,000.

17. The host material according to claim 10 , which comprises:

wherein n is from 20 to 10,000.

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